drive your bicycle
with more safety
with Turn Indicators
Turn Indicators
Fits your bicycle no matter if city bike or cargo bike

Project Status Summer 2019
The visitors at the trade fairs VELOBerlin, VELOHamburg and VELOFrankfurt 2019 shows big interest in our solution. Therefore we'll start the production of our e-bike turn indicator system for cargo and recumbent bicycle in this year.
The prices are not fixed yet.
VELOBerlin Bewertung VELOBerlin Besucher VELOBerlin Cargobike VELOHamburg VELOFrankfurt Besucher VELOFrankfurt Besucher VELOFrankfurt Cargobike
We plan a crowdfunding campaign in march 2020 to realise the turn indicator system for bicyles without battery. Register to the newsletter to get info in time and get a turn indicator system with price advantage.

The velorian turn indicator systems will be continues to develop, tested and improved. Suggestion are welcome.
Contact us for special requirements, we will find an solution.


Indicate your turn

Choose the design of our turn indicator that looks best on your bike. We provide selected and proven motorbike LED indicators adapted to 6 V.

bike rider 1


Controllers and indicators can be mounted on your bike in several ways. We'll provide different brackets.

brother and sister

No battery check!

Once assembled just go. The hub dynamo charges the battery, that's what it's for.


No hub dynamo?

Charge the battery at the USB port. A fully charged battery lasts for several weeks. The battery is commercially available and replaceable.

girl on bike

Left or right?

Choose the indicator switch that suits best to the other controls on your handlebar.

cargo bike

Stay free!

The controllers and indicators are fixed as safe as anything else on your bike. No need to carry around the equipment.

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Gehäuse velorian Blinkgeber

velorian turn indicator system

for every (cargo-)bicycle without battery

Gehäuse velorian eBike Blinkgeber

velorian e-bike turn indicator system

for e-bike cargo and recumbent bicycle

General Questions
It is allowed to mount turn indicator on an bicycle?
Please refer your local regulations.
Should I give a hand signal with working turn indicators on my bike?
Turn indicators on an bicyle are not usual. Therefore show your turn in the usual way first and don't rely on attention of other people.
Who'll mounting the turn indicator system on my bike?
The installation needs no special skills. Only some special tools like tongs for the cable. You if you want or your dealer can install the system.
How many turn indicator designs are available?
The displayed 4 models only at the moment. We'll add more models during the next time.
How'll be mount the turn indicators on my bike?
There are 2 kinds of brackets at the moment. At the brake handle as shown ( brakes with bowden cable) and at rack. We are developing more brackets currently.
questions to velorian turn indicator system
Does charging the battery consume a lot of power? Does this cause brightness to be lost on the headlight?
Do I have to stop flashing manually?
The flashing must be stopped manually. After 120 seconds it will automaticly stop.
Which bike can the system be mounted on?
Basically, the velorian turn indicator systems can be mounted on any bicycle. There are no brackets for all kinds of bicycles yet. We are developing more brackets currently.
How long does the battery last?
Fully charged, depending on usage, it lasts up to 4 weeks or more. Connected to the hub dynamo, depending on usage, the battery should be fully charged all the time.
Is the battery replaceable?
Of course it is possible. The battery has a standard format and can be bought from any electronics dealer.
Where can I buy the velorian turn indicator system for bikes without battery?
Not yet (08/2019). At spring 2020 we'll start a crowdfunding campaign, the first products could be delivered at autumn 2020. Register to the newsletter to get info in time and get a turn indicator system with price advantage.
questions to velorian e-bike turn indicator system
Can I mount the velorian e-bike turn indicator system on a normal e-bike?
The the velorian e-bike turn indicator system as shown is developed for cargo and recumbent bicycle. There is even place for the flasher. To connect the flasher there are no ports on normal e-bikes in most cases. We recommend the velorian e-turn indicator system, it has their own battery an hasnt to connect to the e-bike battery.
Where can I buy the velorian e-bike turn indicator system?
The velorian e-bike turn indicator system for cargo and recumbent bicycle will be available beginning 2020 at

Indicate Your Turn
Today we want to get away from the traffic in the big cities and its negative consequences for the environment and the residents. The bike it is. Especially the change from car to bicycle. Those drivers are familiar with the traffic rules, they do not drive on the sidewalk but rather use for example the left turning lane at intersections. Especially with a cargo bike they do go on the street. Probably they would like to flash there again, like with a car, to make everybody else understand why they are there and where they want to go.

Anyone who has tried to give a hand signal on uneven roads or had to wait at traffic lights may have thought about turn signals on bikes. Many have done so in the past and some results can be found in the patent office databases. Whether mechanical winkers or electric lights, they failed due to the effort that the driver had to spend on their use or failed while providing the energy over large lead batteries or their energy supply with side rotor dynamos. Those days are gone.

Obviously turning signals as well as bicycle lights can be energized by built-in batteries in case separate check and charging process for front and rear light, front and rear indicators and turn signal switch are acceptable. Such option may be sufficient for sports and occasional applications in fine weather. But for commercial applications or for general daily use of the bicycle it can't be acceptable.

Then a hub dynamo is a start. In addition a battery is favored which can be loaded over the hub dynamo. Such battery could also supply energy at traffic lights when waiting time is long again. In addition it could be able to provide energy for the bicycle lights for weeks when charged at electric sockets.

Such solutions is feasible when cables are fixed once on the bike frame. They run from the hub dynamo to the control unit, from there to switch and turn signals. Nobody wants a lot of cables on the bike or a wiring harness. Therefore multi-core cables are used which are not thicker than a Bowden cable. Nowadays cables can be so thin because the LED technology in the turn signals meanwhile consumes less power than for the bulbs of earlier turn signals generations. The plug connections are integrated into the solution and protected against weather influences. This design ensures low maintenance efforts and together with the technical parameters it meets the UN/ECE vehicles regulation No 50.
Flexible Installation
Each bike frame looks different. With its geometry it sometimes offers less space for accessories. With cargo bikes it even looks very different. That's why the control unit for our turn signal solution is as big as necessary and as small as possible. It can easily be attached to the frame with the appropriate cable ties where it fits best with the other accessories. Additionally the bottom is equipped with anti-slip coating. So the control unit will not slip. The situation with the turn signals is alike.

Which turn signals can be used depend on the bike. There need to be 6V LED turn signals with our solution. Turn lights must be yellow. Headlight must be white, brake and tail light must be red. Turn lights as described we do offer. It was important to us to integrate the connectors of the cables into the housing. We also have developed a separate housing for the cable connections on the handlebar.
Battery Check
Ideally, a hub dynamo supplies the renewable energy. The hub dynamo charges the battery. Since hub dynamo, control unit, turn signals and switches are wired with each other, only one battery is sufficient. As with a motorcycle. Of course the battery is interchangeable because even high-performance lithium-ion batteries do not last forever. If you own a bike with a hub dynamo, after a winter break, you simply start driving. Your empty battery is charged on the trip. While driving, the turn signals work even when the battery is flat. This is ensured by the hub dynamo. As soon as the battery is full enough, turn signals work again for the traffic light stop.
Hub Dynamo
Anyone who has no hub dynamo on his bike or does not want to have one, can easily remove the controller and charge it with a standard USB charger such as for a cell phone. One charge will last for several weeks. An LED indicates when it is time to recharge the battery. Additionally the controller can be secured with a small screw. Anyone driving an e-bike already benefits from the advantage that the already existing battery provides the required power. So, only a more tiny controller is needed. This one can ideally be mounted within the frame.
The developments around the subject of e-bike have already generated a lot of suitable switches. Anyone who likes it more solid will find a suitable switch in the field of motorcycles. Any on-off-on switch is fine.
Turn Indicator and Brackets
It's about togetherness in traffic. This includes that flashers should be recognized as such. One option is to use turn signals that have the appropriate approval like 6V mini LED turn signals for motorbikes. These are fixed with stable brackets at front and rear of the bike.

It's also about arranging the turn signals together with the existing lighting on the bike. Flashing headlights and taillights in combination with turn signals do lead to bring more confusion than benefit. Flashing headlights and taillights are even not permitted in Germany's road traffic. And turn signals without the context of a headlight or taillight in the dark are just flashing lights. Front or back, left or right are then no longer recognizable.

The control unit ensures that the turn signals flash at the prescribed frequency. It also ensures that e.g. the red front light flashes at double speed in case the left rear light is broken.

For the type of battery no special kind but standard size was chosen, to make customers able to bye a replacement at the nearest dealer.
cargo bike
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Develepment Partner

agil elektronik
design transfer bonus


Eckehard Bahr
10115 Berlin

mail: contact(at)
mobil: +49 (0)152 260 156 74

USt-ID-Nr.: DE288923168

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Wherever possible our products are made from recycled or natural raw materials.

Packaging is free of plastic materials. We also work with our suppliers to reduce plastic waste.

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